public weka.core.Instance GenerateFeatures(PokerHand hand, int rIdx, int aIdx, weka.core.Instances data, bool generateClass = true)
{
// Check that we are using limit betting.
Debug.Assert(hand.Context.BettingType == BettingType.FixedLimit);
var results = new weka.core.Instance(data.numAttributes());
results.setDataset(data);
int attIdx = 0;
foreach (var method in typeof(LimitFeatureGenerator).GetMethods())
{
// Get all the features of this class.
var attributes = method.GetCustomAttributes(typeof(Feature), true);
if (attributes.Length == 0)
continue;
// Get the feature attribute on this method.
var attr = ((Feature)attributes[0]);
// Get the name for this attribute
string name = attr.Name;
//Console.WriteLine("Hand: {0} Feature: {1}", hand.Context.ID, name);
// Get the feature only if it's applicable to this situation.
object feature = null;
if(rIdx >= (int)attr.MinRound && rIdx <= (int)attr.MaxRound)
feature = method.Invoke(this, new object[] { hand, rIdx, aIdx });
if (SkipMissingFeatures && (feature == null || feature.ToString() == "?"))
continue;
switch (attr.FType) {
case FeatureType.Continuous:
results.setValue(attIdx, (double)feature);
break;
case FeatureType.Discrete:
results.setValue(attIdx, (int)feature);
break;
case FeatureType.Boolean:
case FeatureType.Nominal:
case FeatureType.Enum:
{
var attribute = data.attribute(attIdx);
var attVal = attribute.indexOfValue(feature.ToString());
if(attVal < 0 || attVal > attribute.numValues())
throw new Exception(string.Format ("Invalid attribute value: {0} for attribute {1} (idx: {2} total values: {3}", feature.ToString(), name, attVal, attribute.numValues()));
results.setValue(attribute, attVal);
}
break;
case FeatureType.String:
{
var attribute = data.attribute(attIdx);
results.setValue(attribute, feature.ToString());
}
break;
default: throw new Exception("Unspecified feature type for feature: " + method.Name);
}
attIdx++;
}
if(generateClass)
{
var classAttr = data.classAttribute();
switch (hand.Rounds[rIdx].Actions[aIdx].Type)
{
case ActionType.Bet:
case ActionType.Raise: results.setClassValue(classAttr.indexOfValue("Raise"));
break;
case ActionType.Call:
case ActionType.Check: results.setClassValue(classAttr.indexOfValue("Call"));
break;
case ActionType.Fold: results.setClassValue(classAttr.indexOfValue("Fold"));;
break;
default:
break;
}
}
return results;
}
public override double classifyInstance(Instance instance)
{
if (m_mustValue.HasValue)
return m_mustValue.Value;
instance.setDataset(m_sampleInstances);
instance.setClassValue(0);
m_sampleInstances.clear();
m_sampleInstances.add(instance);
double[] d = classifyInstances(m_sampleInstances);
return d[0];
}
